Top Of The Class – The K-Class Transformer Fluid

KNAN, KNAF, ONAN, ONAF – what do they mean?  Here’s how to unlock the cooling class code for liquid filled transformers. The ANSI/IEE Standard C57.12.00 defines a 4 character code to describe the cooling attributes of the transformer.  The first letter refers to the main cooling medium (i.e. in contact with the windings).  Decode as

By |2019-03-13T06:26:37+00:00February 8th, 2019|Architecture|

Oil For Any Transformer

Whether the insulating fluid be mineral oil, vegetable oil (esters) or synthetic, we can supply the product to match the need. Just as oils vary in design, transformers themselves are abundantly different – many with similar properties and some quite specialised and unique.  Here are some of the electrical transformers for which can supply dielectric

By |2018-10-28T05:59:13+00:00October 28th, 2018|Architecture|

5 Reasons Why You Are Paying More For Transformer Oil

Transformer oil pricing in the Australian market has been relatively stable for some years, but recently with oil prices more widely increasing so has pricing for transformer oil.  Factors that influence the price we pay for any oil product in Australia are the Australian currency, the barrel price for oil, market expectations, and supply and

By |2018-10-16T03:57:43+00:00September 28th, 2018|Architecture|

Purity And Chemistry of Transformer Oil

The quality or performance of electrical insulating oil is dictated by its chemical structure.  Chemical structure determines the consistency of its viscosity performance, it resistance to oxidation (longevity of performance) and its compatibility with other materials. In addition to chemistry, the purity (moisture content and impurities) of the oil also influences many of the oil

By |2018-10-16T03:49:55+00:00August 28th, 2018|Architecture|

Naphthenic versus Paraffinic

Naphthenic versus paraffinic oils – which is better? The answer is not so straightforward because the application will drive the choice of oil. In the case of transformers there is a lot more historical data and knowledge on naphthenics than on paraffinics, and naphthenic oil has traditionally been considered the gold standard. However paraffinic oil

By |2018-07-10T04:01:03+00:00July 9th, 2018|Architecture|

Silicone Transformer Oil

Mineral oil is by far the most abundant transformer fluid in use in Australia.  There are however other options, which do have their place in specific transformer applications including chlorinated hydrocarbons (e.g. PCB which is banned), high molecular weight hydrocarbons, biofluids, esters, and silicone fluids. Silicone fluids or more correctly polydimethylsiloxane (PDMS) are a type

By |2018-06-18T23:44:11+00:00June 18th, 2018|Architecture|

Transformer Oil Waste Removal

Any discussion of transformer oil, particularly in relation to older transformers, scrap transformers, refurbishments or oil retrofills likely leads to mention of PCBs.  In reality most Australian power utilities have de-risked to the point where their transformer fleets are PCB-free… or almost.  At least records here are accurate and comprehensive.  Some other asset owners including

By |2018-03-24T09:19:55+00:00March 18th, 2018|Oil Waste Removal|

Waste Oil Collection

Waste oil collection is one of the key services offered by Benzoil.  With oil processing capabilities located in Brisbane, Sydney and Melbourne we can collect in all eastern states, and with the support of an extensive transport network we can facilitate collections as far north as the country extends.  Metropolitan areas generally contain the highest

By |2018-03-24T09:21:36+00:00October 25th, 2017|Services|

PCB Oil Disposal And Transformer Decontamination

Many proud electrical asset managers will proclaim that their fleet of transformers is PCB-free, yet although they have worked long and hard to achieve this outcome some PCB oil still resides in their system.  In our experience most electric utilities in Australia have methodically surveyed their transformer fleet (power transformers anyway) and maintain dedicated registers

By |2018-03-24T09:24:59+00:00August 16th, 2017|Architecture|